zhsw_wechat/pages/tousujianyi/tousujianyi.js

const app = getApp();
Page({
  data: {
    contact: '',
    phone: '',
    description: '',
    imageList: [],
    showNotification: true,
    countDown: 3,
    isFormValid: false,
    category: '投诉',
    categoryValue: '1',
    isPreviewMode: false,
    title: '',
    content: '',
    replyTime: '',
    replyContent: '',
    formSubmitted: false,
    isSubmitting: false,
    lastSubmitTime: 0,
    categoryMap: [
      {name: '投诉', value: '1'},
      {name: '建议', value: '2'}
    ],
  },

  onLoad: function (options) {
    this.startCountDown();

    // 检查是否是预览模式
    if (options.mode === 'preview') {
      const id = options.id;
      // 获取数据
      this.getDataById(id);
      // 设置为预览模式
      this.setData({
        isPreviewMode: true
      });
    } else {
      // 非预览模式才检查表单有效性
      this.checkFormValidity();
    }
  },

  onShow: function () {
    // 检查是否是从成功页面返回
    if (this.data.formSubmitted) {
      // 重置表单数据
      this.resetForm();
      // 重置提交状态标记
      this.setData({
        formSubmitted: false
      });
    }
  },

  startCountDown: function () {
    let that = this;
    let timer = setInterval(function () {
      if (that.data.countDown > 0) {
        that.setData({
          countDown: that.data.countDown - 1
        });
      } else {
        clearInterval(timer);
      }
    }, 1000);
  },

  goBack: function () {
    wx.navigateBack();
  },

  radioChange: function (e) {
    const value = e.detail.value;
    const selectedCategory = this.data.categoryMap.find(item => item.value === value || item.name === value);
    
    this.setData({
      category: selectedCategory.name,
      categoryValue: selectedCategory.value
    });
    this.checkFormValidity();
  },

  inputContact: function (e) {
    this.setData({
      contact: e.detail.value
    });
    this.checkFormValidity();
  },

  inputPhone: function (e) {
    const value = e.detail.value;
    const phoneNumber = value.replace(/\D/g, '');
    this.setData({
      phone: phoneNumber
    });
    this.checkFormValidity();
  },

  validatePhone: function (phone) {
    const phoneReg = /^1[3-9]\d{9}$/;
    return phoneReg.test(phone);
  },

  inputDescription: function (e) {
    this.setData({
      description: e.detail.value
    });
    this.checkFormValidity();
  },

  chooseImage: function () {
    let that = this;
    if (that.data.imageList.length >= 10) {
      wx.showToast({
        title: '最多只能上传10张图片',
        icon: 'none'
      });
      return;
    }

    wx.chooseMedia({
      count: 10 - that.data.imageList.length,
      mediaType: ['image'],
      sourceType: ['album', 'camera'],
      sizeType: ['compressed'],
      success: function (res) {
        let tempFiles = res.tempFiles;
        let validFiles = [];

        for (let i = 0; i < tempFiles.length; i++) {
          const file = tempFiles[i];
          if (file.size <= 10 * 1024 * 1024) {
            // 为每个文件添加唯一标识
            validFiles.push({
              ...file,
              uid: `${Date.now()}_${Math.random().toString(36).substr(2, 9)}_${i}`
            });
          } else {
            wx.showToast({
              title: '图片大小不能超过10M',
              icon: 'none'
            });
          }
        }

        if (validFiles.length > 0) {
          wx.showLoading({
            title: '图片处理中...',
            mask: true
          });
          
          // 创建副本保存待处理的图片列表
          const filesToProcess = [...validFiles];
          // 使用Map结构存储结果，确保不会丢失
          let processedFilesMap = new Map();
          let processCount = 0;
          
          // 获取当前已有图片的路径列表，用于去重检查
          const existingPaths = that.data.imageList.map(img => 
            typeof img === 'string' ? img : img.tempFilePath
          );
          
          // 处理每个图片
          filesToProcess.forEach((file) => {
            // 检查是否已经存在相同路径的图片
            if (existingPaths.includes(file.tempFilePath)) {
              console.log("跳过重复图片:", file.tempFilePath);
              processCount++;
              
              // 检查是否所有图片都已处理完成
              if (processCount === filesToProcess.length) {
                finishProcessing();
              }
              return;
            }
            
            that.compressImage(file.tempFilePath).then(compressedPath => {
              processCount++;
              
              // 如果返回路径与原路径不同，则认为已成功压缩
              if (compressedPath !== file.tempFilePath) {
                // 使用Map结构通过uid存储处理结果，保证一一对应
                processedFilesMap.set(file.uid, {
                  tempFilePath: compressedPath,
                  size: file.size, // 这里使用原始大小，实际上压缩后大小会变小
                  uid: file.uid,
                  originalPath: file.tempFilePath // 保存原始路径以便追踪
                });
              } else {
                // 如果路径没变，可能是压缩失败或无需压缩的小图片
                processedFilesMap.set(file.uid, {
                  tempFilePath: compressedPath,
                  size: file.size,
                  uid: file.uid
                });
              }
              
              // 检查是否所有图片都已处理完成
              if (processCount === filesToProcess.length) {
                finishProcessing();
              }
            }).catch(err => {
              console.error('图片压缩失败:', err);
              processCount++;
              
              // 即使压缩失败，也将原图添加到结果中
              processedFilesMap.set(file.uid, {
                tempFilePath: file.tempFilePath,
                size: file.size,
                uid: file.uid
              });
              
              if (processCount === filesToProcess.length) {
                finishProcessing();
              }
            });
          });
          
          // 统一处理添加图片到列表的逻辑
          function finishProcessing() {
            // 将Map转换为数组，保持原有顺序
            let processedFiles = filesToProcess.map(file => processedFilesMap.get(file.uid)).filter(Boolean);
            
            // 再次检查去重，防止压缩后的图片路径与已有图片重复
            let currentImagePaths = that.data.imageList.map(img => 
              typeof img === 'string' ? img : img.tempFilePath
            );
            
            let newFiles = processedFiles.filter(file => 
              !currentImagePaths.includes(file.tempFilePath)
            );
            
            console.log(`添加 ${newFiles.length} 张新图片，跳过 ${processedFiles.length - newFiles.length} 张重复图片`);
            
            if (newFiles.length > 0) {
              let newImageList = that.data.imageList.concat(newFiles);
              that.setData({
                imageList: newImageList
              });
            }
            
            wx.hideLoading();
          }
        }
      }
    });
  },
  
  // 使用canvas进行图片压缩
  compressImage: function(imagePath) {
    return new Promise((resolve, reject) => {
      // 对于已经压缩过的图片（通常路径中会包含"compressed"），直接返回
      if (imagePath.indexOf("compressed") > -1) {
        console.log("图片已压缩，直接使用:", imagePath);
        resolve(imagePath);
        return;
      }
      
      // 获取图片信息
      wx.getImageInfo({
        src: imagePath,
        success: (res) => {
          // 先获取原图大小，单位KB
          wx.getFileInfo({
            filePath: imagePath,
            success: (fileInfo) => {
              const originalSize = fileInfo.size / 1024; // 原始大小，单位KB
              
              // 如果原图已经很小（小于300KB），可以直接使用
              if (originalSize < 300) {
                console.log("图片较小，无需压缩:", originalSize, "KB");
                resolve(imagePath);
                return;
              }
              
              // 根据原图大小确定压缩质量
              let targetQuality = 0.8; // 默认压缩质量
              
              if (originalSize <= 500) {
                // 如果原图已经小于500KB，保持较高质量
                targetQuality = 0.9;
              } else if (originalSize <= 1024) {
                // 1MB以下，适当压缩
                targetQuality = 0.7;
              } else if (originalSize <= 2048) {
                // 2MB以下，中等压缩
                targetQuality = 0.5;
              } else if (originalSize <= 5120) {
                // 5MB以下，较大压缩
                targetQuality = 0.3;
              } else {
                // 超过5MB，大幅压缩
                targetQuality = 0.2;
              }
              
              // 创建canvas上下文
              wx.createSelectorQuery()
                .select('#compressCanvas')
                .fields({ node: true, size: true })
                .exec((canvasRes) => {
                  if (!canvasRes || !canvasRes[0] || !canvasRes[0].node) {
                    // 如果找不到canvas节点，则返回原图
                    console.log("找不到canvas节点，使用原图");
                    resolve(imagePath);
                    return;
                  }
                  
                  const canvas = canvasRes[0].node;
                  const ctx = canvas.getContext('2d');
                  const image = canvas.createImage();
                  
                  image.onload = () => {
                    // 计算要缩放的尺寸，保持宽高比
                    let ratio = 1;
                    
                    // 根据原图大小调整尺寸
                    if (originalSize > 5120) { // 5MB以上
                      ratio = Math.min(1, 1200 / res.width, 1200 / res.height);
                    } else if (originalSize > 2048) { // 2MB以上
                      ratio = Math.min(1, 1500 / res.width, 1500 / res.height);
                    } else if (originalSize > 1024) { // 1MB以上
                      ratio = Math.min(1, 1800 / res.width, 1800 / res.height);
                    } else {
                      ratio = Math.min(1, 2000 / res.width, 2000 / res.height);
                    }
                    
                    const targetWidth = Math.round(res.width * ratio);
                    const targetHeight = Math.round(res.height * ratio);
                    
                    // 设置canvas尺寸
                    canvas.width = targetWidth;
                    canvas.height = targetHeight;
                    
                    // 清除画布
                    ctx.clearRect(0, 0, targetWidth, targetHeight);
                    
                    // 绘制图片
                    ctx.drawImage(image, 0, 0, targetWidth, targetHeight);
                    
                    // 生成带有标记的压缩后路径名称
                    const compressedName = `compressed_${Date.now()}_${Math.random().toString(36).substr(2, 5)}`;
                    
                    // 压缩参数
                    const compressOptions = {
                      canvas: canvas,
                      width: targetWidth,
                      height: targetHeight,
                      destWidth: targetWidth,
                      destHeight: targetHeight,
                      fileType: 'jpg',
                      quality: targetQuality,
                      // 添加压缩标记
                      filePath: `${wx.env.USER_DATA_PATH}/${compressedName}.jpg`
                    };
                    
                    // 执行一次压缩
                    wx.canvasToTempFilePath({
                      ...compressOptions,
                      success: (result) => {
                        console.log("压缩成功，新路径:", result.tempFilePath);
                        resolve(result.tempFilePath);
                      },
                      fail: (error) => {
                        console.error('Canvas转图片失败:', error);
                        // 如果转换失败则返回原图
                        resolve(imagePath);
                      }
                    });
                  };
                  
                  image.onerror = () => {
                    console.error('图片加载失败');
                    resolve(imagePath);
                  };
                  
                  image.src = imagePath;
                });
            },
            fail: (error) => {
              console.error('获取原始图片信息失败:', error);
              resolve(imagePath);
            }
          });
        },
        fail: (error) => {
          console.error('获取图片信息失败:', error);
          resolve(imagePath);
        }
      });
    });
  },

  previewImage: function (e) {
    let index = e.currentTarget.dataset.index;
    let urls = this.data.imageList.map(item => {
      // 处理不同格式的图片对象
      return typeof item === 'string' ? item : item.tempFilePath;
    });
    wx.previewImage({
      current: urls[index],
      urls: urls
    });
  },

  deleteImage: function (e) {
    let index = e.currentTarget.dataset.index;
    let imageList = this.data.imageList;
    imageList.splice(index, 1);
    this.setData({
      imageList: imageList
    });
  },

  checkFormValidity: function () {
    const {
      contact,
      phone,
      description,
      category
    } = this.data;
    // 只检查必填项：联系人、联系电话和内容说明
    const isValid = contact.trim() !== '' && this.validatePhone(phone) && description.trim() !== '';

    this.setData({
      isFormValid: isValid
    });

    return isValid;
  },

  onInputChange: function (e) {
    const {
      field
    } = e.currentTarget.dataset;
    const {
      value
    } = e.detail;

    this.setData({
      [field]: value
    });

    this.checkFormValidity();
  },

  bindPickerChange: function (e) {
    this.checkFormValidity();
  },

  // 添加submitForm方法
  submitForm: function () {
    // 如果正在提交中，直接返回
    if (this.data.isSubmitting) {
      return;
    }
   
    if (!this.checkFormValidity()) {
      let errorMsg = '';

      if (!this.data.contact.trim()) {
        errorMsg = '请填写联系人';
      } else if (!this.validatePhone(this.data.phone)) {
        errorMsg = '请输入正确的联系电话';
      } else if (!this.data.description.trim()) {
        errorMsg = '请填写内容说明';
      }

      wx.showToast({
        title: errorMsg,
        icon: 'none'
      });
      return;
    }

    const now = Date.now();
    const lastSubmitTime = this.data.lastSubmitTime;
    // 如果距离上次提交时间小于 2 秒，直接返回
    if (now - lastSubmitTime < 2000) {
      // wx.showToast({
      //   title: '请勿重复提交',
      //   icon: 'none',
      // });
      return;
    }

    // 更新上次提交时间
    this.setData({
      lastSubmitTime: now,
    });

    const fileManager = wx.getFileSystemManager();
    this.data.imageList.map(imgInfo => {
      const base64 = fileManager.readFileSync(imgInfo.tempFilePath, 'base64');
      imgInfo.base64 = base64;
      return imgInfo;
    })
    const submitData = {
      category: this.data.categoryValue,
      contact: this.data.contact,
      phone: this.data.phone,
      description: this.data.description,
      images: this.data.imageList,
      userName: app.globalData.currentAccountInfo.username,
      userNum:  app.globalData.currentAccountInfo.usernumber
    };
debugger
    // 设置正在提交中 防止重复点击提交按钮
    this.setData({
      isSubmitting: true,
    });

    console.log('提交的数据:', submitData);

    wx.showLoading({
      title: '提交中...',
    });
    wx.request({
      url: app.globalData.interfaceUrls.feedback,
      method: 'POST',
      header: {
        'content-type': 'application/json', // 默认值
        'token': app.globalData.userWxInfo.token,
        'source': "wc",
        '!SAAS_LOGIN_TOKEN_!': app.globalData.currentAccountInfo.dsKey
      },
      data: submitData,
      success(res) {
        wx.hideLoading();
        if (res.data.code == '200') {
          wx.navigateTo({
            url: '/pages/tousujianyiSuccess/tousujianyiSuccess',
          });
        }
      },
      fail(error) {
        wx.hideLoading()
        utils.simleInfo('登记失败，请稍后再试')
      },
      complete: () => {
        this.setData({
          isSubmitting: false, // 提交完成，重置标志位，可继续提交
          formSubmitted: true // 在提交成功后设置标记，返回将重置表单
        });
      },
    })
    // 在提交成功后设置标记，返回将重置表单
    // this.setData({
    //   formSubmitted: true
    // });
  },

  submitRepair: function () {
    this.submitForm();
  },

  // 根据ID获取数据
  getDataById: function (id) {
    // 这里应该是从服务器获取数据
    // 但为了演示，我们从本地数据中获取
    const pages = getCurrentPages();
    const prevPage = pages[pages.length - 2]; // 获取上一个页面

    if (prevPage && prevPage.data.noticeList) {
      const item = prevPage.data.noticeList.find(item => item.id == id);
      if (item) {
        const formatTime = (timeString) => {
          if (!timeString) return ''; // 如果时间为空，返回空字符串
          const date = new Date(timeString);
          const year = date.getFullYear();
          const month = String(date.getMonth() + 1).padStart(2, '0'); // 月份补零
          const day = String(date.getDate()).padStart(2, '0'); // 日期补零
          return `${year}-${month}-${day}`;
        };
        
        let categoryName = '投诉';
        const categoryItem = this.data.categoryMap.find(cat => cat.value === item.category);
        if (categoryItem) {
          categoryName = categoryItem.name;
        }
        
        this.setData({
          category: categoryName,
          categoryValue: item.category || '1',
          contact: item.feedbackperson || '',
          description: item.replynote || '',
          phone: item.contactnumber || '',
          imageList: item.attachments || [],
          replyTime: formatTime(item.replytime) || '',
          replyContent: item.replycontent || ''
        });
      }
    }
  },

  resetForm: function () {
    this.setData({
      contact: '',
      phone: '',
      description: '',
      imageList: [],
      category: '投诉',
      categoryValue: '1'
    });
  }
});